<  Retour au portail Polytechnique Montréal

Translating state-of-the-art spinal cord MRI techniques to clinical use: A systematic review of clinical studies utilizing DTI, MT, MWF, MRS, and fMRI

Allan R. Martin, Izabela Aleksanderek, Julien Cohen-Adad, Zenovia Tarmohamed, Lindsay Tetreault, Nathaniel Smith, David W. Cadotte, Adrian Crawley, Howard Ginsberg, David J. Mikulis et Michael G. Fehlings

Article de revue (2015)

Document en libre accès dans PolyPublie et chez l'éditeur officiel
[img]
Affichage préliminaire
Libre accès au plein texte de ce document
Version officielle de l'éditeur
Conditions d'utilisation: Creative Commons: Attribution (CC BY)
Télécharger (938kB)
Afficher le résumé
Cacher le résumé

Abstract

Background: A recent meeting of international imaging experts sponsored by the International Spinal Research Trust (ISRT) and the Wings for Life Foundation identified 5 state-of-the-art MRI techniques with potential to transform the field of spinal cord imaging by elucidating elements of the microstructure and function: diffusion tensor imaging (DTI), magnetization transfer (MT), myelin water fraction (MWF), MR spectroscopy (MRS), and functional MRI (fMRI). However, the progress toward clinical translation of these techniques has not been established. Methods: A systematic review of the English literature was conducted using MEDLINE, MEDLINE-in- Progress, Embase, and Cochrane databases to identify all human studies that investigated utility, in terms of diagnosis, correlation with disability, and prediction of outcomes, of these promising techniques in pathologies affecting the spinal cord. Data regarding study design, subject characteristics, MRI methods, clinical measures of impairment, and analysis techniques were extracted and tabulated to identify trends and commonalities. The studies were assessed for risk of bias, and the overall quality of evidence was assessed for each specific finding using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) framework. Results: A total of 6597 unique citations were identified in the database search, and after full-text review of 274 articles, a total of 104 relevant studies were identified for final inclusion (97% from the initial database search). Among these, 69 studies utilized DTI and 25 used MT, with both techniques showing an increased number of publications in recent years. The review also identified 1MWF study, 11 MRS studies, and 8 fMRI studies. Most of the studies were exploratory in nature, lacking a priori hypotheses and showing a high (72%) or moderately high (20%) risk of bias, due to issues with study design, acquisition techniques, and analysis methods. The acquisitions for each technique varied widely across studies, rendering direct comparisons of metrics invalid. The DTI metric fractional anisotropy (FA) had the strongest evidence of utility, with moderate quality evidence for its use as a biomarker showing correlation with disability in several clinical pathologies, and a lowlevel of evidence that it identifies tissue injury (in terms of group differences) compared with healthy controls. However, insufficient evidence exists to determine its utility as a sensitive and specific diagnostic test or as a tool to predict clinical outcomes. Very low quality evidence suggests that other metrics also show group differences compared with controls, including DTI metrics mean diffusivity (MD) and radial diffusivity (RD), the diffusional kurtosis imaging (DKI) metric mean kurtosis (MK), MT metrics MT ratio (MTR) and MT cerebrospinal fluid ratio (MTCSF), and the MRS metric of Nacetylaspartate (NAA) concentration, although these results were somewhat inconsistent. Conclusions: State-of-the-art spinal cord MRI techniques are emerging with great potential to improve the diagnosis and management of various spinal pathologies, but the current body of evidence has only showed limited clinical utility to date. Among these imaging tools DTI is the most mature, but further work is necessary to standardize and validate its use before it will be adopted in the clinical realm. Large, well-designed studies with a priori hypotheses, standardized acquisition methods, detailed clinical data collection, and robust automated analysis techniques are needed to fully demonstrate the potential of these rapidly evolving techniques.

Mots clés

ALS; CSM; DCM; DTI; MRI; MS; MT; SCI; T2*-weighted imaging; amyotrophic lateral sclerosis; cervical spine; cervical spondylotic myelopathy; degenerative cervical myelopathy; diffusion tensor imaging; magnetization transfer; multiple sclerosis; myelopathy; spinal cord; spinal cord injury; spine; Animals; Brain Mapping; Diffusion Tensor Imaging; Humans; Magnetic Phenomena; Magnetic Resonance Imaging; Magnetic Resonance Spectroscopy; Myelin Sheath; Spinal Cord; Spinal Cord Injuries; Translational Medical Research; Water; Water

Sujet(s): 2500 Génie électrique et électronique > 2500 Génie électrique et électronique
Département: Département de génie électrique
Organismes subventionnaires: Ontario Ministry of Health — Clinician Investigator Program (MOH-CIP)
URL de PolyPublie: https://publications.polymtl.ca/3480/
Titre de la revue: NeuroImage - Clinical (vol. 10)
Maison d'édition: Elsevier
DOI: 10.1016/j.nicl.2015.11.019
URL officielle: https://doi.org/10.1016/j.nicl.2015.11.019
Date du dépôt: 08 nov. 2018 15:43
Dernière modification: 30 sept. 2023 19:37
Citer en APA 7: Martin, A. R., Aleksanderek, I., Cohen-Adad, J., Tarmohamed, Z., Tetreault, L., Smith, N., Cadotte, D. W., Crawley, A., Ginsberg, H., Mikulis, D. J., & Fehlings, M. G. (2015). Translating state-of-the-art spinal cord MRI techniques to clinical use: A systematic review of clinical studies utilizing DTI, MT, MWF, MRS, and fMRI. NeuroImage - Clinical, 10, 192-238. https://doi.org/10.1016/j.nicl.2015.11.019

Statistiques

Total des téléchargements à partir de PolyPublie

Téléchargements par année

Provenance des téléchargements

Dimensions

Actions réservées au personnel

Afficher document Afficher document